I just got a Korg Pitchblack tuner to replace my Boss TU2 because it doesn't have a buffer in it, and the power requirements are 600ma. I only plan to use this as a tuner-not to daisy chain effects, and only have a 100ma output on my ISO-5 power supply. The manual says it only draws 30ma, but to use a supply of 600ma. I should be fine right? Anyone have any issues using this pedal on their boards?